S&S Cycle

Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. Bolt-in kits do...

This bolt-in big bore kit is easy to install, and requires no machining or rebalancing. This is the largest bore (3.937") that can be fit in a stock engine case. Stock engine height is maintained so...

Thousands of hours of engine testing have proved the forged rocker arm kit to be superior to other non-roller rocker arms. An economical solution for stock rebuilds and mild performance upgrades.

The S&S forged steel roller rocker arms were designed for superior strength and to eliminate the failure-prone stress areas found in some other rockers.

S&S Cycle 2017+ M8 Models Heavy Duty Stud Kit For Rocker ArmsThis Part Fits:YearMakeModelSubmodel2018-2020Harley-DavidsonFLDE Deluxe 107Base2017-2021Harley-DavidsonFLHR Road...

Stronger material with a 14% increase in strength over stockThis Part Fits:YearMakeModelSubmodel2018-2019Harley-DavidsonFLDE Deluxe 107Base2018-2019Harley-DavidsonFLFBS Fat Boy...